Lightnews Vol 10.pdf - Philips Lighting Controls

Lights off after hours
The lighting control system is programmed
to operate in three distinct automated
modes—‘working’, ‘lunch’ and ‘after
hours’ (security and cleaning)—which
are timer-based. Although the precise
timing and functionality is individually
configurable for each floor and/or zone, it
essentially corresponds to ‘lights on’ at the
commencement of working mode, followed
by a timed sequence of dimming to lunch
mode, ending in ‘lights off’ when the system
goes into after hours mode. At this time,
motion sensors are activated in amenities
areas and lift lobbies to initiate lighting if
motion is detected. Intermittent-use areas,
such as meeting rooms and function areas,
utilise motion detection at all times.
“This level of operational flexibility
simplifies the management of lighting energy
consumption for the entire building. By
simply ensuring that lighting is only activated
when and where it is required, energy
savings can be realised and money saved.”
says Jimmy Du, Managing Director of Bridges
Electronics, the Philips Dynalite distributor
for China.
From a luminaire perspective, a distributed
solution was selected for PetroChina
HQ’s office areas. Highly energy-efficient
Philips luminaires were utilised to achieve
the required lux levels. When paired
with the lighting control system, the
luminaires provide enormous potential for
energy savings.
“
Operational flexibility
simplifies the
management of lighting
energy consumption for
the entire building.
”
Automated mirror blinds
PetroChina HQ is equipped with a
number of additional innovative design
features aimed at optimising environmental
performance. Automated mirror-coated
blinds mounted on the exterior of the
building windows track the sun during
the day and reflect light into the building’s
interior. Here, natural light levels are
enhanced with the required amount of
artificial light, allowing PetroChina to save
energy while keeping lux levels within a
predetermined range—no matter what time
of day or year.
This optimisation of natural light levels
is achieved by the daylight harvesting
functionality of PetroChina HQ’s lighting
control system. With the aid of sensors,
light levels can be modulated automatically
according to the level of natural
light available.
Comprising four adjoining
multi-storey buildings,
PetroChina HQ has set
a new benchmark for
building performance and
efficiency in China.
With the automated lighting control
system online building-wide, PetroChina
HQ is reaping the energy saving rewards.
Thanks to the building’s scalable control
architecture, future expansion promises to
be straightforward with additional thirdparty
controllers for other applications
easily integrated.
This scalability is also reflected by the
lighting control system. Here, all of the
DALI universes are below capacity and the
existing lighting control system network is
as scalable as it is robust—additional lighting
applications are easily incorporated into the
existing architecture. With the support of
innovative solution providers, PetroChina
will continue to set the benchmark for
‘green’ building performance in China.
Lightnews Vol 10 | 9